公开(公告)号：US10469143B2

公开(公告)日：2019-11-05

申请号：US16059948

申请日：2018-08-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Leiming Zhang ,  Jianghua Liu ,  Yongxing Zhou

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/0417 ,  H04L5/00 ,  H04W72/04

Abstract: A precoding matrix set determining method and apparatus, and a parameter indication information sending method and apparatus are provided. The precoding matrix set determining method include: determining, by a first network device, a parameter used for determining a precoding matrix set, where the parameter includes at least one of a phase parameter, an amplitude parameter, a quantity of vectors in the precoding matrix set, a quantity of vectors in a first codebook set in dual-codebook feedback, and a quantity of vectors in a second codebook set in the dual-codebook feedback, and the parameter is not fixed; and using the parameter to determine the precoding matrix set, where the precoding matrix set includes at least one precoding matrix. By using this solution, flexibility of feeding back a precoding matrix indicator is improved.

公开(公告)号：US10454537B2

公开(公告)日：2019-10-22

申请号：US15630303

申请日：2017-06-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Kunpeng Liu ,  Jianghua Liu ,  Leiming Zhang

IPC: H04L5/00 ,  H04B7/0417 ,  H04B7/0456 ,  H04W24/08 ,  H04B7/0452 ,  H04L1/20 ,  H04B7/06

Abstract: Embodiments of the present invention provide a channel measurement and feedback method, a network device, and a system, and relate to the field of communications technologies. The method includes: receiving, by a first network device, pilot port configuration information sent by a second network device, where the pilot port configuration information is used to describe at least two pilot ports; measuring, by using the at least two pilot ports, a pilot signal sent by the second network device, and determining first information, where the first information includes at least one of second information of the first network device or third information of a third network device when it is assumed that the first network device and the third network device communicate with the second network device by performing spatial multiplexing on a same time frequency resource.

公开(公告)号：US20190306802A1

公开(公告)日：2019-10-03

申请号：US16446094

申请日：2019-06-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yifan Liu ,  Ming Lei ,  Leiming Zhang

IPC: H04W52/14 ,  H04W72/04 ,  H04L5/00 ,  H04W52/24 ,  H04W52/36

Abstract: Embodiments of this application provide a downlink transmission method, a base station, and a terminal device. The method includes: dividing, by a base station, to-be-transmitted data into at least two sets, and configuring a transmit power for each of the at least two sets; and sending, by the base station, data in each set to a terminal device at the transmit power configured for each set. In the embodiments of this application, the to-be-transmitted data is divided into the at least two sets, a transmit power is configured individually for each set, and the data in each set is sent to the terminal device at the transmit power configured for each set.

公开(公告)号：US20190305839A1

公开(公告)日：2019-10-03

申请号：US16444679

申请日：2019-06-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Leiming Zhang ,  Ming Lei ,  Yifan Liu

IPC: H04B7/06 ,  H04B7/0408 ,  H04B7/0456

Abstract: Embodiments of the present invention relate to a transmission method using a dynamically adjusted beam set, a base station, and a terminal. The method includes: sending, by the base station, first indication information to a terminal using first layer signaling, where the first indication information indicates a first beam set; sending, by the base station, second indication information to the terminal using second layer signaling, where the second indication information indicates at least one beam in the first beam set; and sending, by the base station, data to the terminal using the at least one beam.

公开(公告)号：US10326504B2

公开(公告)日：2019-06-18

申请号：US16015831

申请日：2018-06-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Kunpeng Liu ,  Leiming Zhang ,  Jianghua Liu

IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/04 ,  H04B7/0673 ,  H05K999/99

Abstract: A method for measuring and feeding back channel information and a corresponding apparatus are provided. In an embodiment the method includes determining, by a first network device, a first codebook from a first codebook set, wherein the first codebook set comprises at least two first codebooks, wherein a sub-vector Wx of each first codebook is formed by a zero vector and a non-zero vector, wherein vectors forming the Wx are associated with different groups of antenna ports, wherein each first codebook comprises at least one first sub-vector   [ V a 0 0 V a 1 0 ] and/or at least one second sub-vector   [ 0 V b 0 0 V b 1 ] , and wherein Va0 and Va1 are elements in the vector Va, and Vb0 and Vb1 are elements in the vector Vb and sending a codebook index to a second network device, wherein the codebook index is associated with the first codebook selected from the first codebook set.

公开(公告)号：US20190173539A1

公开(公告)日：2019-06-06

申请号：US16272428

申请日：2019-02-11

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Kunpeng Liu ,  Leiming Zhang ,  Jianghua Liu

IPC: H04B7/0456 ,  H04L1/06 ,  H04B7/06 ,  H04B7/0417 ,  H04B7/04 ,  H04L1/00

Abstract: Embodiments of the present invention disclose a signal transmission method, a system, and a device. When measuring a reference signal and determining channel quality, UE obtains a difference between codeword to CSI-RS mapping relationships by using a channel quality measurement model, may calculate an optimized mapping relationship by means of measurement, and determines at least one mapping relationship from these mapping relationships, to adjust a codeword to CSI-RS mapping relationship of a channel, thereby improving system flexibility and increasing channel resource utilization.

公开(公告)号：US10263673B2

公开(公告)日：2019-04-16

申请号：US15817925

申请日：2017-11-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Leiming Zhang ,  Kunpeng Liu

IPC: H04B7/0456 ,  H04L29/08 ,  H04B7/06

Abstract: Embodiments of the present invention provide a signal transmission method and device. The method includes: determining, by a sending device, a target precoding matrix V, where V=(H)−1·{tilde over (H)}, H indicates a channel matrix between the sending device and a receiving device, {tilde over (H)} indicates an equivalent channel matrix between the sending device and the receiving device, ({tilde over (H)}H·{tilde over (H)}) or ({tilde over (H)}·{tilde over (H)}H) is a diagonal matrix, and {tilde over (H)} is related to a transmission distance D between the sending device and the receiving device and an element spacing of an antenna of the receiving device; and sending, by the sending device, a signal to the receiving device according to the target precoding matrix V. Because {tilde over (H)} meets a characteristic that ({tilde over (H)}H·{tilde over (H)}) or ({tilde over (H)}·{tilde over (H)}H) is a diagonal matrix, a channel corresponding to {tilde over (H)} can support multiple data stream transmission. Therefore, the signal transmission method and device provided in the embodiments of the present invention can support multiple data stream transmission.

公开(公告)号：US20180034516A1

公开(公告)日：2018-02-01

申请号：US15727889

申请日：2017-10-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Leiming Zhang ,  Kunpeng Liu ,  Yongxing Zhou

IPC: H04B7/0413 ,  H04W4/02 ,  H04B7/06

CPC classification number: H04B7/0413 ,  H04B7/04 ,  H04B7/0617 ,  H04L1/06 ,  H04W4/02

Abstract: The present invention provides a data transmission method and device. The method includes: performing, by the first communications equipment, multi-stream data transmission with the second communications equipment according to a first antenna port, where the first antenna port is an antenna port, of the first communications equipment, satisfying a condition for multi-stream data transmission between the first communications equipment and the second communications equipment. The method provided in embodiments of the present invention improves applicability of a multi-stream data transmission system for line of sight propagation.

公开(公告)号：US20180027541A1

公开(公告)日：2018-01-25

申请号：US15705585

申请日：2017-09-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Wu ,  Bingyu Qu ,  Lixia Xue ,  Yongxing Zhou ,  Leiming Zhang ,  Jianqin Liu ,  Kunpeng Liu

IPC: H04W72/04 ,  H04L5/00 ,  H04W88/02 ,  H04W88/08

Abstract: A control information sending method, a base station, and user equipment are provided. The method includes: sending, by a base station, first control information to first user equipment; transceiving, by the base station, first data to/from the first user equipment according to the first control information; and sending, by the base station, first trigger information to the first user equipment, where the first trigger information is used to indicate that the base station transceives second data to/from the first user equipment according to partial information or all information of the first control information.

公开(公告)号：US20170338868A1

公开(公告)日：2017-11-23

申请号：US15371840

申请日：2016-12-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Wu ,  Leiming Zhang ,  Jianghua Liu

IPC: H04B7/0456 ,  H04B7/0417 ,  H04B7/06 ,  H04L1/06

CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/0639 ,  H04L1/06

Abstract: Embodiments disclose a method for transmitting a 4-antenna precoding matrix, a user equipment, and a base station. The method includes determining a rank used for indicating the number of transmission layers, determining a first precoding matrix in a codebook set corresponding to the rank, determining a first PMI and a second PMI used for indicating the first precoding matrix, and sending the first PMI and the second PMI used for indicating the first precoding matrix to a base station.